Where to set T5 sep_token?

In the documentation for T5 eos_token, it is pointed out that:

  • eos_token (str, optional, defaults to "</s>") — The end of sequence token.

When building a sequence using special tokens, this is not the token that is used for the end of sequence. The token used is the sep_token.

But there doesn’t seem to be anywhere I can set this sep_token